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O. THIEME Feb ISS N30.

COMBINED TYPEWRITING AND COMPUTING MACHINE Fled June l 1926 2Sheets-Shea?.

mi C C E E C 1 M Patented Feb. 13, i930 UNITED STATES PATENT OFFICE TOELLIOTT-FISHER COMPANY, OF NEW WARE YORK, N. Y., A CORPORATION OF DELA-COMBINED TYPEWRITING- AND COMPUTING MACHINE Application led June 1,1926. Serial No. 112,797.

ThisV invention relates to a combined typew'riting and computingmachine, and more particularly to a machine of the Underwood- Hansontype such as shown in the patent to Hanson, No. 1,278,812, of September10, 1918.

In this machine, a register-i'ack-bar is provided for each decimal order'of a register and each bar carries a' series of settable pinsrepresenting the digits. The numeral-keys of the typewriter areeffective to set pins in the various register-bars representing thenumerals of an item to be added or subtracted, and a general operator,having a bar mounted transversely of the register-rack-bars, issubsequently reciprocated in the same direction as theregister-rack-bars. During the initial or forward stroke of theactuatingcycle, this bar will move in a path adjacent the register-barsand pick up the various register-bars by engaging such of the pins ashave been set and move the bars in proportion to the various digitvalues as represented by the pins set therein.

The register-bars ai'e permanently in mesh with ay series ofregister-wheel-pinions which .drive a like series of dial-wheels by apawland-ratchet mechanism, the dial-wlieels carrying visible numerals ontheir periplieries. By these means the forward or initial strokel of theregister-bars is imparted to the dialwlieels, which thereupon are lockedand then the register-bars and the pinions are reset to normal position.A spring-actuated detent is provided for each dial-wheel to align thesame. The detents engage modified gears carried by the dial-wheels.Suitable carrying devices are also`provided to cooperatewith thedial-wheels to carry over the tens values, and these are actuated by thegeneral operator during the returningr movement thereof.

Then the general operator is reciprocated above a certain speed, thetransverse bar Will engage the register-pin-bars with considerableimpact the ratcliet-driven dial-wheels will move ahead faster than theirdriving means and the dial-wheel detents will register one or even twounits in excess of the right numeral.

It is one of the objects of this invention to providepositivecontrolling means for the dial-wheels to prevent this momentum movementthereof, so that they cannot over-rotate when actuated at such higherspeed as may otherwise be permissible for the machine, since it is wellknown that the speed at which this machine can be safely operated islargely vas these spaces present themselves in succession during therotation of the dial-wheels, the entering and retiacting movement of thelock-levers being so synchronized. with the Y rotation of thedial-wheels that they Will atv all times prevent movement` of thedial-wheels at higher speed than that of the driving pinions, so thatthe dial-wheels' are positively locked in proper position at the end ofthe stroke.

According to certain features of this invention, there is provided apaWl associated with each dial-wheel, which paWls engage the teethV onthe modified gears carried by the dialwheels. Said pawls are pivotallymounted .upon a fixed cross-shaft and are simultaneously vibrated topermit the eseapement of one tooth at a time and thus control the speedat which` the Wheels'rnay be rotated. The

means .for vibrating the pawls is carried by the vgeneral operator andmay include a camplate having the same number of teeth as the modifiedgear. The pavvls, however, are only vibrated bythe general operatorduring the forward stroke thereof, being spring-held in theirineffective positions during the returnstroke, so as to permit the freerotation of the Wheels when the carrying mechanism actuates. To this endthere may be provided a one-Way pa-wl which is engaged by the teeth ofthe plate during the forward stroke of the general operator, the pawlidling over the teeth during the return-stroke of the general operator.j

In order to synchronize the movement of the pawls with that of theWheels, there is provided a novel mechanism which is effecthe wheels arepositively connected at allshowing certain parts thereof in their normalfor adjusting the d ial-wheel-lockingmechanism relatively to the generaloperator. 1

Figure 5 is an operating view showing the.

tive to positively move the pawl-vibrating cam-plate relatively tothegeneral operator. This provides for a very minute adjustment and is anexcellent expedient to cheapen the manufacturing cost of such anintricate mechanism, since it permits the use of more liberalmanufacturing limits. The plate may be positively locked in place aftermaking the required adjustments.

This invention is especially suitable to be used in connection with amachine having means for preventing overcarrying during thereturn-stroke of the general-operator, 1 such as disclosed in the patentto Thornton, 1,228,148, dated May 29, 1917, because then times with thegeneral operator and are thereby constrained to the movement thereof.

Other featuresandadvantages will hereinafter appear. I

In the accompanying drawings, v Figure 1 is a cross-sectional view, inelevation, of an Underwood-Hanson machine positions. Figure thedial-whcel-locking mechanism. l

Figure 3 is a side view showing the pawland-ratchet connection betweenthe pin-carryin members and their associated dial-wheels. igure 4 is aside view showing the means position of the locking pawls when thegeneral operator is moved sothat the pins in the' pin-bars are half aspace ahead of the pinsetting bars.

Figure 6 i in the pin-setting bars. locking pawls are shownw in aposition to prevent rotation of the wheels.

Figure 7 its'extreme forward position in which the pawls" positivelyprevent movement of the dial-wheels.

Figure 8 is a fragmentary operating view s a similar. viewshowing the'pins showing the position of the parts during the Said:` machine has asa part of its regular` a letter-spacing mechanism 20 which is conreturnstroke of the general operator.

a machine of the Underwood-Hanson type.

equipment a' traveling carriage 10, upon which a platen 11 is rotatablymounted by means 4of an axle 12. The mac inealso has a series ofcharacter-keys 13 and a row of numeral-keys 14. The numeral-keys 14. aremounted on key-levers 1.5,' rockably mounted atl16, and are effective,by 'means of bellcranks 17, to swing corresponding type-bars 18. Thecarriage is letter-spaced by means of trolled by a universalbar 20a.l

Each of the key-levers 15 is provided 'with a link 19 which actuates, bymeans of an asso- 2' is a fragmentary plan view ofto thereby. carry In,f `this view the shows the general operator near This invention isillustrated as applied to.

ciatedarm 21, a co-operating cross-bar 22 movably mounted on a settingframe 23.

Each of thefcross-bars22pis effective to' setone of a series ofdigit-pins 24 on pin-carrying members 25. However, in order that a pinmay be set, it is first necessary to advance tion. To this end, themachine is provided with equipment at 'the rear of the' carriage which'consists of selectors 26which are elecontrol rollers v27. Saidselectors are. provided with cams-28,*which, when the selectors are intheir effective positions, contact-with levers 29, rockably mounted-at30. The' levers 29 are o eratively connected to the pin-carrying mem ers25 by means ofselecting rods 31 and levers 32, pivotally mounted' at 33.Theforward ends of the' levers 32 engage transposing devices 34, which,in turn, are operatively connected to small bell-cranks35, which engagepins 36 fasttof the pin-carrying'members25.

The' pin-carrying members 25 have racks 40, at the 'frontthereof, whichengage with gears `41, to thereby vrotate dial-wheels 42,

havingindications thereon visible through a 'motor and associatedmechanism, not shown.

When the machine is operated by either method at a high rate of speed,thecross-bar 45 strikes the pin-bars with considerable impact andhencethe dial-wheel associated therewith maybe thrown ahead of thegeneral operator, due to the one-way pawl-andratchet connections 48, 49,provided between each dial-wheel and each pin-bar (see Figure 3). Sincethe safe limit at which this machine can be operated is largelycontrolled bv the speed at which the general operator can be moved,without overthrowing the pinvbars, there is provided interlockingmechanism for the purpose of constraining the overthrow of thedial-wheel.

Saidv mechanism includesr a series of lockwhich have been depressed vthepin-carrying member 25 to setting posivvated to effective, positions bymeansof zoneing pawls, levers or dogs 46, which are rockably mounted ona cross-shaft 47, the pawls being held in the positions shown in Figure5 by means of springs 47a. The forward ends of the pawls 46 areprovidedwith toes 50 designed to engage between teeth 51 of a modified gearcarried'b'y the wheels 42. All the levers 4 6 are simultaneouslyvibrated by mechanism which includes a shaft 52, an arm 53 and a seriesof bail-pieces 54. The arm and the bail-pieces are secured to the shaft52, the latter engaging hooks 55 under the pawls 46. In order that thelevers 46 may be vibrated during the forward stroke of the generaloperator while being held idle during the return stroke thereof, thereis provided a one-way pawl 56 which is normally held in the positionshown in Figure 5, by means of a spring 57. The pawl 56 engages with aplate 58 carried by the general Operator. the plate being effective tomove the aim 58 upwardly when the general operator moves in thedirection shown by the arrow 5t). In Figure 6 the pawls 46 are shown ina position to prevent rotation of the wheels 42, the toes 50 being shownin the path of the teeth 5l, in which position the pawls are held by theaction of the arm 53, which is swung upwardly when the pawl 56 iselevated by engagement with teeth 63 on the plate 58. The position ofthe pawls 46, shown in Figure 7, indicates the eXtreme position of thegeneral operator, in which position the arm 53 is swung higher by meansof a tooth 60, to thereby force the toes 50 further between the teeth5l.

The return movement of the general operator is indicated by an arrow 6lin Figure 8. In said figure, the pawl 56 is shown riding idly over theteeth 63 of the plate 58, while the arm 53 is held in its ineffectiveposition, by means of a spring 64. Said spring 64 is stronger than thespring 57, which is mounted between spring-studs 62 and 62a respectivelysecured to the pawl 56 and the arm 53. The arm 58 is held in its normalposition against a pin 65 by the spring 64;

In order to synchronize the movement of the pawls 46 and the wheels 42,which move relatively to the general operator, means are provided formaking adjustment between the plate 58 and the general operator. Saidplate has slots 69 (Figures l and 4) and is slidably mounted on studs 66and '70 fast to the general operator. The stud 66 carries an eccentricdisk 67 designed to engage a pin 68, fast to the plate 58, so that, byrotating the eccentric disk 67, the plate may be moved relatively to thegeneral operator. After making t-he desired adjustments, the plate islocked in position by means of nuts 7 0il at the ends of the studs 66and 70.

The bail-pieces 54, which are secured to the shaft 52 by means of screws71', are not vibrated during the return stroke of the general operator.However, the levers 46 are effective to lock the wheels and preventoverrotation thereof during the carrying of tens into the Wheels ofhigher denominational order. To this end, the levers 46 are providedwith rearwardly-extending ngers 74,

which are engaged by locking cams at predetermined positions of carryingcams 73,

mounted on a cross-shaft 72. It is well known that the shaft 72 isrotated during the return movement of the general operator, being idleduring the forward movement thereof. The mechanism just described ismore fully disclosed in said patent to Thornton.

Since it is desired to positively lock the wheels 42 when the machinestands in its normal position, and since neither the plate 58 nor thelocking cams 75 are effective to swing the levers 46 to their lockingpositions when the general operator is in its normal or eX- treme rearposition, there is provided a cam v or roller 76, rotatably mounted upona stud 77, carried by the general operator. Said roller engages with anarm 78, fast to the shaft 52, and is effective to rock the shaft and thebail-pieces associated therewith, and in turn swing the pawls to theireifective or locking positions as shown in Figure l.

Each dial-wheel is provided with an associated 'detent'ing pawl 79 whichisheld in engagement between the teeth 5l of the modified gear, tothereby position all the wheels in alignment with each other. Said pawlsare held in their effective positions by means drive mechanismconnecting each registerbar with its dial-wheel, and a general 'operatortherefor, the combination of a dial-wheelcontrolling device vbratorythroughout the rotation of the dial-wheels to prevent overrotationthereof, the general operator being connected'to simultaneously actuatethe register-bars and vibrate the controlling device.

2. In a typewriting and computing machine having register-bars withpinions in mesh with said bars to rotate dial-wheels having detcntingtooth-spaces, and a general operator for said bars, the combination ofcontrol-levers for engaging the tootl'i-spznces` of the dial-wheels, anda controlling device connected to the general operator to actuate andvibrate the control-levers in and out of said tooth-spaces during therotation of the dial-wheels, to prevent over-rotation thereof.

3. In a typewriting and computing machine having registering devicesincluding d ial wheels, register bars, intermediate mechanism fortransmitting one-way movements from the register-bars to rotate thedial-wheels, and a genera-l operator, the coml pawls engageable With'.the teeth of the .Wheels, and means movable with the generalbiiiation' of dial-Wheel-con-trolling a devices -vibratory'throughoutthe rotation of the dial- Wheels toh prevent over-rotation thereof, the'general operator simultaneously actuating the register-bars and thecontrollin@r devices and an adj ust-ing device for c acli"controllingdevice to adjust the same to" synchronize the actuation of thecontrolli-ng device With the rotation of the dial-Wheels.

4:. I n aA computing machine including varegister having denominationalWheels, pincarrying members, numeral-keys for` selectively setting thepins, anda general operator having a cross-bar Jfor engaging the pins)set in-said p inecai'rying members to rotate said Wheels, thecombination of means for i r constraining the movement of the wheels tothe Wheels to the movement of the general operator, said meansincludinga series of operator for limparting to said pavvls a rock;- ingmovement effective to clear the teeth of said gears only as required topermita normal movement of rotation..

v6. Iii a computing mechanism including a register havingdenominationalvvheels, pincarrying. members for rotating said Wheels,

' numeral-keys for selectively setting the pins on said pin-carryingmembers, and a general operator having a cross-bar for the. pin-carryingmembers, combination of therota-tion vof each Wheel to the movement lofits associated pin-carrying member, .in-

cluding a paWl vibrated into interlocking engagement with each Wheelthroughout the movement of its pin-carrying member.

7. In a coinputingmech'anism including a register having denominationalWheels, pincarrying members numeral-keys for selectively setting thepins, and a general operator for the pincarrying members, to rotate saidwheels', the combina-` tion of mechanism for constraining the rotationof each Wheel to the movement of its associated pin-carrying member,including a pawl, a controlling device eiective to siinultaneouslycontrol all the pawls, and means for operatively connecting saidcontrolling device with the general operator in a manner to actuatethepawls in the forwardstroke of the general operator,-bu t holding thepawls the combination ofmeans for constraining the movement of torotatesaid Wheels, the` mechanism for constraining for rotating said Wheels,

return stroke of the general operator.

8. In a computing mechanism including a register having denominationalWheels, pincarrying members,numeral-keys'for selectivey lyisetting thepins on said pin-carrying members, and a general operator for thepin-carrying members, to rotate sai'dwheels, the combinationof mechanismfor constraining the rotati'on'of eachwheel to the movement of itsassociated p iii-carrying'meniber, including a paWl, a controllingdevice effective to simulin their ineffective positions throughout thetaneously control all the paWls, and means for operatively vconnectingsaid controlling device ivlth the general operator in a mannerto'actua't-e the pawls in the forward stroke of the general operator,but holding the pawls in their ineiiective .positions during the returnstrolreof thegeneral operator, said means including a rack carried bythe general operator, a sha-ft upon which the controlling device isrockably mounted, an 'arm on said shaft, and a one-Way pawl carried bysaid arm to be vibrated by the rack.

9. In a computing mechanism having toothed register-wheels, pin-carryingmembers for each Wheel, a general operator for 'the pin-carryingmembers, a vpaWl-and-ratchet mechanism for operatively connecting thevWheels andthe pin-carrying members dur# ing the forward movement ot'the general operator` and detentingpawlsfor engaging the teeth of theWheels'tol align said Wheels and to "prevent rotation thereof `'duringthe return movement of the general operator, the combination ofmechanism for preventing the fivheelsvfrom runningahead of theirassociated pin-carrying members throughout the forward stroke of thegeneral operator, said last-mentioned mechanism including a seriesofroclrable locking levers and means con trollcd by the general operatorfor imparting to said levers a rocking movement effective to interlockwith the teeth of said Wheels in a manner to'permit the escapement ofonly as many teeth as will correspond to the driving movement of theirassociated vpin-carrying members.

10. In a computing mechanism having toothed denominational Wheels,denominational bars associated with said Wheels, and a general operatorfor moving the bars-to io tate the wheels, the combination of means forpreventing over-rotation of the Wheels, said means including lockinglevers movable in and out between the teeth of said Wheels, springs forholding the locking levers in their ineffective positions, 'andinterruptive means carried by the generaloperator for continu! 11. In acomputing mechanism having toothed denominational Wheels, denominationalbars associated with said Wheels, and -a general operator .for movingthe bars torotate the wheels, the combination ofmeans for preventingover-rotation of the wheels, said means including locking levers movablein and out between the teeth of said wheels,

springs for holding the locking' levers in their mounted on said arm,the plate having a series of cams to successively engage the pawl duringthe forward movement of the general \operator in a manner to rock theshaft, and impart a rocking movement to the pawl between the teeth ofthe wheels.

12. In a computing mechanism having toothed register-wheels, pincarrying members for each wheel, a general operator for thepin-'carrying members, a pawl-andratchet mechanism for operativelyconnecting the wheels and the pin-carrying members during the forwardmovementof the general operator, and detent-pawls for engaging the teethof the wheels to align said wheels and to prevent rotation thereofduring the return movement of the general operator, the combination ofmechanism for preventing the wheels' from ruiming ahead o theirassociated pin-carrying members during the forward stroke of the generaloperator, said last-mentioned mechanism including a series of lockinglevers having interruptive movements between the teeth of said wheels,said movements being imparted to the levers by cams movable with thegeneral operator during the forward movement thereof that becomeineffective during the return movement of the general operator.A

13. In a computing mechanism having toothed denominational wheels withcarryover mechanism, denominational bars associated with said wheels,and a general operator for moving the bars, to rotate the wheels,

the combination-of means forpreventing over-rotation of the wheels, alocking lever movable in and out'betwe'en the teeth of each l`lwheel,means for siinultaneousljVY vibrating all the levers between the teethof the wheels sociated wheel by means of a ratchetanda pawl in a mannerto rotate the wheels during the forward movement of the generaloperator, the combination of a series of locking levers controlled bythe general operator throughout the forward movement thereof, forpositively controlling the rotation of the wheels. preventingover-rotation thereof, said means including a rock-shaft having auniversal member fast thereto, said member being connected with thelocking levers in a 'manner to vibrate the levers in and out between theteeth of said wheels, and means foroperatively connecting saidrock-shaft with vthe general operator in a manner to rock the shaft onlyduring the forward movement of the general operator.

15. In a computing mechanism having' toothed denominational wheels,denominational bars associated with the wheels, and a general operatorfor actuating said bars, each bar being operatively connectedto itsassociated wheel by means of a ratchet and apawl in a manner to rotatethe wheels during the forward movement of the general operator, thecombina-tion of a series of locking levers engageable with the teeth ofsaid wheels, interlocking 'means vibrated by the general operatorthroughout the forward movement thereof, for controlling the rotation ofthe wheels and reventing over-rota- Htion thereof, and means forpositively lock- '.ing all the wheels when the 'general operator reachesits full forward stroke.

16. In a computing machine having a series of registering wheels, ageneral operator connectible for rotating said wheels selectivelymiscellaneous distances, and individual locking dogs for said wheels,said wheels having toothed or notched portions to eo-operate with saidlocking dogs, the combination with said wheels, of mechanism dependentupon the forward movement of theA general operator to prevent overthrowof each wheel, said mecha- `nism including a rack on the generaloperator having motion-conveying toothed spacings timed to theunit-spacings of the registering-wheels.

17. In a computing machine having a series of registering wheels, ageneral operator connectible for rotating said wheels selectivelymiscellaneous distances, and individual locking dogs for said wheels,said wheels having toothed or notched portions to co-operate with 'saidlocking dogs; the combination with said wheels, of mechanism dependentupon the forward movement'of the general operator for preventingoverthrow of each wheel, said mechanism including a rack on the 'general.operator having motion-conveying toothed spacings timed to theunit-spacings of the registering wheels, and a pawl engageable by theteeth of the rack and operatively connected to convey a step-by-stepwheel` locking movement throughout the forward movement of the generaloperator.

18. In a computing machine having a series of normally lockedregistering'wheels, and a general operator connectible for rotating saidf Wheels individually through predetermined '5 unit distances of one tonine, the combination with the wheels, of mechanism dependent upon themovement ofthe general operator andV effective to rst release the Wheelsand then successively lock the Wheels during 10 each subsequentaccumulation of single units to prevent the overthrow or"l individualWheels.

19. In a computing mach-ine having a series of normally lockedregistering Wheels, and a general operator` connectible for rotatingsaid Wheels individually through predetermined unit distancesof oneto-nine5 the combination with the Wheels, of mechanism dependent uponthe movement of the general operator 2o and eiective to first releasethe Wheels and thensuccessively lock the wheels during each subsequentaccumulation of single units to preventthe overthrow of individualWheels, said mechanism including a Wheel-locking rack effective duringthe movement of .the

general operator in one direction to temporarily lock all the -Wheelsand 'a Wheel-locking cam effective during the return movement of thegeneral operator to permanently lock ally the Wheels.

20. In a computing machine having a series of registering Wheelsnormally locked to prevent idle rotation, and a general operatorconnectible for rotating said Wheels computatively through predeterminedunits of dis-l tance. the combination with the Wheels, of mechanismdependent upon the continuous forward movement of the general operatorin registering a succession of units, to release 40, and relock theWheels during the registry of each unit to prevent overthrow of theWheels. A

` 21. In a computing machine, having a series of registering Wheelsnormally locked to pre- 5 vent idle rotation, and a general operatorconnectible for rotating said Wheels computatively through predeterminedunits of distance, the combination of mechanism dependent upon thecontinuous forward movement o-the general operator in registering `asuccession of units7` to release and reloclr the Wheels during theregistry of each unit to prevent overthrow of the Wheels, said mechanismincluding a rack on each Wheel-and individual rack-locking paWlsvibrated by the general operator during each unit of its travel tosuccessively release and lock the racks. O'ITO THIEME.

